Tap the cogwheel icon in the upper right. (1st icon from the upper right.) > My Account. Make sure you're signed into your CC account proper.

You should then be able to export your projects via the project selection UI. (5th icon from the upper right > Upload to Creative Cloud)

Be aware it won't sync per se (syncing was removed in later versions of PS Touch); you'll have to keep uploading as you make changes to the original PS Touch project but they'll be available via your Creative Cloud account on your laptop.